If you want the LED on only when the switch is thrown, use the lead marked 12V as the input to the switch, and then the switch output will be the 20A labeled lead. Mounting hole diameter: 12mm. Wide Application: The 12v toggle switch is suitable for almost any motorized vehicle such as cars, trucks, boats, ATVs, UTVs, airplanes, motorhomes, racecars, golf carts, or any other off-road vehicle. Buy it with This item: Fan Belt for Volvo D13 Engine 22690514-3838617 $6050 Get it In Stock 12V LED Toggle Switch, Waterproof SPST 20A ON/Off Lighted Rocker Toggle Switch for Car Marine RV Vehicles Truck Boat Dash Auto (5PCS). $11.99. Buy Now. About... Round Rocker Switch, 12V Toggle Switch, Waterproof Lighted Lighted 12 Volt Switch Depending on how the switch is connected, the LED can be configured to be on all the time, or only when the switch is thrown. Power: 20A 12V DC (working for 9V-12V DC). Rocker Switch 1PC 12v 24V Waterproof Led Car Switch Boat Truck Light Toggle Switch Toggle Rock Momentary Switch Long lifespan of up to 10,000 Cycles. (Note: Do not equipped with waterproof function) Make sure that you have room to mount it. 3. It also has a heavy throw, requiring some force to move the toggle. 4. Depending on how the switch is connected, the LED can be configured to be on all the time, or only when the switch is thrown. 3Pcs Rocker Toggle Switch 12V 20A Heavy Duty Racing Car Automotive Auto SPST ON/Off Toggle Switch Blue LED Light Illuminated 3Pin with Red Led 1. This toggle switch is a automotive toggle switch 12v 2. As a switch with 20A capability, a little large (Size check image 5). Flexible & Durable: You can toggle the handle manually to the ON position or OFF position.